70 SELECTED WESTEBN FLORA 



1. A. canSscens, Fursh. Lead Plant. 



Erect, 1-3 ft. high, whitish-pubescent ; leaflets 29-51, oblong to elliptical ; 

 flowers bluish purple; spikes clustered at the summit. In bunches on sandy 

 prairie, Man. 



2. A. microphylla, Pursh. 



Low, less than 1 ft. high, nearly glabrous; leaflets rigid; flowers purplish; 

 spikes solitary. Moist prairies. Red River Valley. 



3. A. fruticdsa, L. False Indigo. 



A rather tall shrub, not so pubescent as A. canescens; flowers violet- 

 purple; leaflets 9-25, rather scattered. Along the Red River. , 



3. PETALOSTfeMON. Praieie Clover. 



Calyx 5-toothed; petals on slender claws, four of them alike and 

 borne on the sheath of the monadelphous stamens, the other, the 

 standard, attached to the calyx tube; pod l-2-seed6d, enclosed in 

 the calyx. Perennial herbs with odd-pinnate leaves, minute stipules, 

 and small flowers crowded in dense terminal heads or spikes. 



1. P. purpfireus, (Vent.) Rydb. 



Smoothish; leaflets 5, linear; heads short, cylindrical; flowers rose- 

 colored. (P. violacens, Miohx.) Dry prairies, Man.-Alta. 



2. P. c&ndidus, Michx. 



Smooth; leaflets 7-9, lanceolate; heads cylindrical; flowers white. Dry 

 prairies, Man.-Alta. ' 



4. LUPINUS. Ltjpine. 



Calyx 2-lipped; sides of standard recurved; stamens monadel- 

 phous, the tube entire; anthers of two kinds, alternately round and 

 oblong; pod flat and often constricted between the seeds. Herbs 

 with palmately compound leaves, the stipules adhering to the base 

 of the petiole, and racemes or spikes of rather showy flowers. 



1. L. argSnteus, Pursh. Bilvebt Lupine. 



A perennial shrubby herb, 1-2 ft. high, much branched add densely silky- 

 pubescent ; leaflets 6-8, rounded at the apex and tapering towards the base ; 

 flowers bluish purple or yellowish; pod silky-pubescent, 3-5-seeded. Var. 

 argophyllus, Wats., more silky than the type, is reported from Cypress Hills, 

 Wood Mountain, foothills S-W. of Calgary, and similar localities of N. Sask. 

 and Alta. 



2. L. Kingii, Wats. 



Dwarf, clustered, perennial, 3-6 in. high, from a rootstock; villous 

 throughout; leaflets oblong to lanceolate, shorter than the petioles; flowers 



